Improvement in rolling shutters



UNITED' STATES PATNTor-wme `JAMES e.'wILso1\i,or NEWYO-RK, N. Y.`

IMPROVEMENTIN ROLLINGfSHUTTERS.

Specification forming part of Letters Patent No. 173,705, dated February 15, 1876; application filed 4 December 16,1875. Y

To all whom it may concern:

Be it known that I, JAMES GODFREY WIL- SON, of the city, county, and State of New York, have invented a new and useful Improvement in Rolling Shutters, which improvement is fully set forthlin the following specification, reference being had to the accompanying drawing, in Whichposition, and that when the shutter is open,

downwardly-inclined spaces are left between theslats, through which persons stationed on the insidelcan look out, and through which i, the air can freely circulate, while the rays of the sun` are effectually excluded. The slats are retained in position byhooks, which catch in the supporting-bands and over the edges of the `mortises in the slats through which the supporting-bands pass, said hooks being inserted from one side into the middle supporting-hand, and from the opposite sides' into the outer supporting-bands, so that each slat is securely confined in its position.

In the drawing, theletters A.A designate the slats of my rolling shutter, which are made diamond-shaped, as shownin Figs. l and 3 of the drawing, and which are provided with mortises a, through which pass the support- 4ing-bands B. The mortises a run parallel to `the sides b b of the slats` A, so that when said slats are strung on their supporting-bands,

and the shutter is closed, the sides b b of. the slats are brought` in vertical planes, and

that the shutter when it is closed presents, iiat surfaces on the inside and also on the outf closed,downwardly-inclined open passages o are left between `the slats, which permit a free circulation of air, and which permit persons At the, same time, when my shutter is stationed on the inside to look out, While the rays of the sun are eectually excluded.

Another advantage of my diamond-shaped slats is that the mortiscs a are of sufcient length to steady the slats on their supporting-V bands. It must be` remarked that the effect of my slats will not be changed if their corners c c, or either of them, are rounded off, so as tomake the crosssection of each slat oval or egg-shaped. Such form I consider an equivalent of the diamond shape shown in the drawing.

Instead of passing the` supporting bands through mortises in the slats, I can secure the same to the slats by means of metallic clasps a9, (see Fig. 4,) which are fastened to the outside of the slats. 'In' this case the spaces between said clasps and the sidesof the slats form the substitute for the mortises. This method of fastening is preferable when the supporting-bands are made of a textile fabric or of leather. When the supporting-,bands are of metal, I pass the same through mortises in the slats, as above described. 0n these metallic supportingbands thek slats can be secured in different ways.

In Fig. 1 I have shown simple pins al, which pass transversely through the slats and through the supporting-bands. But I prefer to fasten the slatson their bands by hooks e, Figs. 2 and 3, said hooks being made to catch atone end into holes f in the bands, while their other ends form lips g, which catch under or over the edges of the mortises a..

In order to confine each slat in its position, I use three supporting-bands, one in the middle and two near the ends of vthe slats, and I apply the y hooks c to the middle supportin gband, so that their lips g catch under thelower edges of the respective mortises, while the f hooks on the outside hands areso placed that` their l ps catch over the upper edges of the respective mortises. By these means the slats can be secured in position in a simple and durable manner, and the full strength of said slats is preserved. i

rEhe ends of the hooks e may be provided with spurs p, which bite into the slats and prevent the same from sliding on the supporting-bands. If desired, the lips g may be left oil", and the hooks may be provided with two spurs, one on each side of the supportingband, so as to retain the slats firmly in position, but I prefer to use the lips g, because7 by their action, the distance between the slats is automatically regulated.

What I claim as new, and desire-to seem'e by Letters Patent, is- Y 1. A rollingl shutter, .Composed of diamonilf shaped slats strung ou supporting bands, which pass through mortises running parallel to the-sides b b of .said slats, whereby, when the sh utteris closed, down Wardly-inclinedropen spaces o are left between the .sl`ats,substantiall y as and for the vpurpose shown and described. 2. The combination of;y the hooks e, having lips g, with the mortised slats Ay and the metallic supporting-bauds QB of a rolling shutter, slvlbstantially as Set forth..

In testimony that I claim the foregoing I have hereunto set myyhaud and seal this 11th day of December., 11875, JAS. G. 'WILSON [L. 8.]

Witnesses:

W- HAUF-F, E. F. KASTENHUBER. 

